add healthcheck, and stopsignal, plus export the correct port

    RATELIMITS_BLACKLIST=example1.blacklist,example2.blacklist 

ENV DOCUMENTS=about=./about.md

EXPOSE 7777

EXPOSE ${PORT}

STOPSIGNAL SIGINT

ENTRYPOINT [ "bash", "docker-entrypoint.sh" ]

HEALTHCHECK --interval=30s --timeout=30s --start-period=5s \

    --retries=3 CMD [ "curl" , "-f" "localhost:${PORT}", "||", "exit", "1"]

CMD ["npm", "start"]